diff --git a/tree/.config/niri/config.kdl.tpl b/tree/.config/niri/config.kdl.tpl
index 84bc49a..b2f3797 100644
--- a/tree/.config/niri/config.kdl.tpl
+++ b/tree/.config/niri/config.kdl.tpl
@@ -6,6 +6,7 @@
 environment {
     DISPLAY ":0"
     ELECTRON_OZONE_PLATFORM_HINT "auto"
+    QT_QPA_PLATFORMTHEME "qt5ct"
 }
 
 // https://github.com/YaLTeR/niri/wiki/Configuration:-Input